Bicycle handle-bar.



PATENTBD AUG. 15, 1905.

3'. ANGROVE.

BICYCLE HANDLE BAR.

LPPLIGATION FILED DEO.15, 1904.

SAMUEL ANGROVE, OFKINGSTON, CANADA.

BICYCLE HANDLE-BAR.

Specification of Letters Patent.

Patented Aug. 15, 1905.

Application filed December 15,1904. Serial No 236,994-

To all whom it may concern.-

Be it known that I, SAMUEL ANGROVE, of the city of Kingston, in thecounty of Frontenac, in the Province of Ontario, Canada, have inventedcertain new and useful Improvements in Bicycle Handle-Bars, of which thefollowing is a specification.

My invention relates to improvements in bicycle handle-bars and theobject of the invention is to devise a bicycle handle-bar so disposedand su ported on the top of the stem or standar as to give amaximumresiliency and produce an effective cushion for preventing thejar on the riders hands; and it consists, essentially, of a split sleevein which the handle-bar is centrally located, the said split sleevebeing provided with a depending cam extending over the center of thestem, a collar having an upwardly-extending jaw within which the camextends, and a pin extending through the jaw and cam and forming a pivotfor the cam, an interior socket fitting within the stem and cap andhaving at the upper end a supportingrim, a plug extending into the upperend of the socket and located underneath the cam, an expanding-plugfitting into the lower end of the stem, a spindle provided with a squareupper end fitting into a corresponding socket in the plug and having thelower end extending freely through the bottom of the tubular socket andthreaded beneath the bottom of the socket and extending into theexpandingplug, and a spiral spring surrounding the s indle and extendingbetween the plug and t e bottom of the socket-sleeve, the parts beingotherwise constructed and arran ed in detail, as hereinafter moreparticular y explained.

Figure 1 is a perspective view of a handlebar constructed in accordancewith my invention. Fig. 2 is a sectional elevation.

In the drawings, like letters of reference indicate corresponding partsin each figure.

A is the stem, which fits into the u per end of the front standard ofthe bicycle. The stem A is split at a at the lower end and provided withan expansion-plug B, which is tapered,-as shown in Fig. 2. The upper endof the stem A has preferably suitably brazed to it a collar A, havingthe upper upwardlyextending side jaws a, having a sto a formed betweenthe jaws for a purpose w ich will hereinafter appear.

C is a split sleeve, the forward lugs c c of which are connectedtogether by a suitable bolt 0'. The split sleeve 0 is provided with adepending cam C, substantially triangular in form. The cam projection 0extends between the aws a and is pivotally held therein by a pin 0,extending through the jaws and through the cam. The stop a abuts theouter straight edge of the cam C and is designed to limit the backwardmovement of the sleeve C.

D is a tubular socket which fits within the stem A- and is provided atthe upper end with a rim (2, by which it is held from verticaldisplacement.

E is a plug provided with a rounded upper end 6, which is square incross-section or sided so as to allow of its being turned by a wrench.The plug E is provided with sockets e at the lower end, as indicated,and. the plug E is so'fitted into the tubular socket D as to havevertical movement therein.

F is a spindle which is rovided with a square upper end designed to fitinto the socket e of the plugE, an enlarged central portion F, designedto form a shoulder, so as to abut against the bottom of ,the tubularsocket around the hole (1 therein, and a reduced lower portionF whichextends freely through the hole d and is threaded at the lower end so asto extendthrough a corresponri igngly-threaded hole in the expansion luThe plug B is provided'with a key I), attached to or forming part of thesame, which fitsrinto one of the slits a in the'stem A, and therebyrevents the plug from rotating.

The 0 ject of the expansion-plug is, as is well known, to provide forsufiicient expansion within the head or standard of the bicycle in orderto provide for the necessary vertical adjustment of the handle-bar.

f is a collar which is attached to or forms part of the spindle F.

G is a spiral spring surrounding the spindle F and extending between thebottom of the plug E and the collar F.

The operation of my invention will be readily understood. Any pressureupon the handle-bars will throw the part C to the left, and this willthrow a forward and downward pressure on the cam C, which pressure willbe communicated to the plug E and be received on the sprin G, which, itwill be noticed, is held away om any liability of contact with theinterior of the tubular socket D by means of the spindle F, so that thespring has perfect freedom to expand dia metrically and this, too,without the liability of impinging on the stem to any extent as will belikely to prevent the spring forming an effective cushion.

I am aware that it is not broadly new to support a handle-barresiliently in a tubular socket at the top of the head of the frontstandard of a bicycle, nor provide means for manipulating theexpansion-plug so as to provide for the vertical adjustment of ahandle-bar, and I do not wish in this specification to claim, broadly,any such device.

What I claim as my invention is- 1. In a bicycle handle-bar, thecombination with the stem and upper collar attached to or forming partof the same and provided with upwardly-extending jaws and the tubularsocket fitting into the stem and provided with a toprim by which it issupported on the top of the stem and an extension-plug extending intothe bottom of the stem, and a split sleeve adapted to receive thehandle-bar and provided with a depending cam-shaped portion adapted toextend for the major portion above the stem and having a back-stopdesigned to contact with the stop between the jaws, of a plug fittingwithin the upper portion of the tubular socket and having the upper endrounded and adapted to receive a wrench, and a socket in the lower end,a stem having a square or like upper end adapted to fit in the socket inthe plug and a central enlarged portion, and a reduced lower enddesigned to extend freely through the bottom of the tubular socket andhaving a thread b eneath the socket designed to extend into acorresponding hole in the extension-plug and a spiral spring surroundingthe stem and extending between the bottom of the plug and the bottom ofthe tubular socket as and for the purpose specified.

2. In a bicycle handle-bar, the combination with the stem and uppercollar attached to or formin part of the same and provided with upwarly-extending jaws and the tubular socket fitting into the stem andprovided with a top rim by which it is supported on the top of the stemand an extension-plug extending into the bottom of the stem, and a splitsleeve adapted to receive the handlebar and provided with a dependingcamshaped portion adapted to extend for the major portion above the stemand having a back-stop designed to contact with the stop.

between the jaws, of a plug fitting within the upper portion of thetubular socket and having the upper end rounded and adapted to receive awrench, and a socket in the lower end, a stem having. a square or likeupper end adapted to fit in the socket in the plug and a centralenlarged portion, and a reduced lower end designed to extend freelythrough the bottom of the tubular socket and having a thread beneath thesocket designed to extend'into a corresponding hole in theextension-plug, a collar located on the spindle above the bottom of thetubular socket and a spiral spring surrounding the stem and extendingbetween the bottom of the plug and the collar on the stem as and for thepurpose specified.

SAMUEL ANGROVE.

Witnesses:

D. M. McINTYRE, JOHN MCINTYRE.

